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脳内の神経細胞をつなぐシナプスは,記憶・学習を支える重要な構造である。近年,シナプスは経験や環境に応じて絶えずその形態や機能を変化させることがわかってきた。中でも,運動系を制御する小脳は,一生涯を通じて観察されるダイナミックなシナプス改変を介して運動記憶・学習に寄与する。今日,デルタ受容体やC1qファミリー分子をはじめ,シナプス機能や記憶・学習に関わるさまざまな分子たちの挙動が明らかにされつつある。
Abstract
The synapse is a structure connecting neurons in the brain, which is crucial for learning and memory. Accumulating evidence suggests that synapses continuously change in function and structure in response to learning and memory. Especially, in the cerebellum, which underlies motor learning and memory, synapses are highly dynamic throughout life. Recently, various types of molecules involving synapse integrity, learning and memory, such as δ-type glutamate receptors (GluD receptors) and C1q-family proteins, have been identified.
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